"I don't see anything negative; I think it's quite natural when people separate and go their own ways. You just have to be adult about it and just always wish the other person happiness, success and love -- like, sincerely -- and I do," Scherzinger said. "We don't, like, talk."
"I think he is the best driver since Ayrton Senna, and I think that he's probably going to win this year," she added. "I only wish him happiness and success."
Scherzinger and Hamilton had an on-again, off-again relationship for eight years, but split again in February 2015 following engagement rumors. The singer has since started dating 25-year-old Bulgarian tennis star Grigor Dimitrov.
"I've probably matured a little later in relationships and [in] my life, because I started at such a young age," she told Ross. "I was in my first group when I was 18. I was always so focused on working so much, so I didn't have much time for relationships.
"I think [soul searching is] really important if you are in a relationship, no matter who you are," the star added. "You have to be happy first and love yourself first and be whole before you can really give your everything in a relationship."
Scherzinger and Dimitrov were first linked in July 2015. The singer was spotted ring shopping with Dimitrov in September after telling The Sun's Fabulous magazine that she's very happy with the tennis player.
"We've been together for quite some time now, so I'm just living in the moment and I'm happy," she said in August. "It's good for girls to be with nice guys. Respect the nice ones -- they can win!"
Scherzinger came to fame with the girl groups Edens Crush and the Pussycat Dolls, and has since pursued a solo career. She last released the album Big Fat Lie in 2014, and presently serves as a judge on The X Factor U.K. Season 13.